Step 1

Preheat an outdoor grill or grill pan over high heat.

Step 2

Mix the brown sugar, chili, cumin, paprika and lime zest together in a medium bowl. Stir 2 teaspoons of the sugar-spice mixture into the sour cream and set aside. Put the remaining spice mixture in a medium bowl and add the shrimp and olive oil and toss to coat and set aside to marinate for 15 minutes.

Step 3

Toss the coleslaw mix with the spiced sour cream until well coated and season with salt and pepper. Toast the tortillas on the grill, about 1 minute per side. Transfer to a plate and wrap with foil to keep warm.

Step 4

Remove the shrimp from the marinade and sprinkle with salt. Lightly oil the grill grates. Grill the shrimp, flipping once, until just cooked through, 2 to 3 minutes per side. Serve the shrimp in the warm tortillas with the slaw, whole cilantro leaves, and lime wedges on the side.